diff --git a/.gitignore b/.gitignore
index 560c9b530..30157c5b5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -41,7 +41,7 @@ docs/source/config_options.rst
 .vscode
 
 # Downloaded theme files
-#share/templates/lab/static/index.css
+share/templates/lab/static/index.css
 share/templates/lab/static/theme-dark.css
 share/templates/lab/static/theme-light.css
 share/templates/classic/static/style.css
diff --git a/share/templates/lab/index.html.j2 b/share/templates/lab/index.html.j2
index 256e74797..b69e7e976 100644
--- a/share/templates/lab/index.html.j2
+++ b/share/templates/lab/index.html.j2
@@ -100,6 +100,56 @@ a.anchor-link {
     display: block;
   }
 }
+/* Table of Contents for the html exporter */
+.jp-RenderedHTMLTOC-Title {
+  font-family: var(--jp-content-font-family);
+  font-size: 24px;
+  margin: 16px 0;
+  padding-left: 64px;
+  font-weight: bold;
+}
+
+.jp-RenderedHTMLTOC-Item-h1 {
+  font-family: var(--jp-content-font-family);
+  font-size: 20px;
+  margin: 0;
+  padding-left: 88px;
+}
+
+.jp-RenderedHTMLTOC-Item-h2 {
+  font-family: var(--jp-content-font-family);
+  font-size: 18px;
+  margin: 4px;
+  padding-left: 112px;
+}
+
+.jp-RenderedHTMLTOC-Item-h3 {
+  font-family: var(--jp-content-font-family);
+  font-size:16px;
+  margin: 4px;
+  padding-left: 136px;
+}
+
+.jp-RenderedHTMLTOC-Item-h4 {
+  font-family: var(--jp-content-font-family);
+  font-size: 14px;
+  margin: 4px;
+  padding-left: 160px;
+}
+
+.jp-RenderedHTMLTOC-Item-h5 {
+  font-family: var(--jp-content-font-family);
+  font-size: 12px;
+  margin: 4px;
+  padding-left: 184px;
+}
+
+.jp-RenderedHTMLTOC-Item-h6 {
+  font-family: var(--jp-content-font-family);
+  font-size: 10px;
+  margin: 2px;
+  padding-left: 208px;
+}
 </style>
 
 {% endblock notebook_css %}
diff --git a/share/templates/lab/static/index.css b/share/templates/lab/static/index.css
index b495e0eb1..08224006a 100644
--- a/share/templates/lab/static/index.css
+++ b/share/templates/lab/static/index.css
@@ -4034,57 +4034,6 @@ button.jp-Dialog-close-button {
   font-size: var(--jp-content-font-size0);
 }
 
-/* Table of Contents for the html exporter */
-.jp-RenderedHTMLTOC-Title {
-  font-family: var(--jp-content-font-family);
-  font-size: 24px;
-  margin: 16px 0;
-  padding-left: 64px;
-  font-weight: bold;
-}
-
-.jp-RenderedHTMLTOC-Item-h1 {
-  font-family: var(--jp-content-font-family);
-  font-size: 20px;
-  margin: 0;
-  padding-left: 88px;
-}
-
-.jp-RenderedHTMLTOC-Item-h2 {
-  font-family: var(--jp-content-font-family);
-  font-size: 18px;
-  margin: 4px;
-  padding-left: 112px;
-}
-
-.jp-RenderedHTMLTOC-Item-h3 {
-  font-family: var(--jp-content-font-family);
-  font-size:16px;
-  margin: 4px;
-  padding-left: 136px;
-}
-
-.jp-RenderedHTMLTOC-Item-h4 {
-  font-family: var(--jp-content-font-family);
-  font-size: 14px;
-  margin: 4px;
-  padding-left: 160px;
-}
-
-.jp-RenderedHTMLTOC-Item-h5 {
-  font-family: var(--jp-content-font-family);
-  font-size: 12px;
-  margin: 4px;
-  padding-left: 184px;
-}
-
-.jp-RenderedHTMLTOC-Item-h6 {
-  font-family: var(--jp-content-font-family);
-  font-size: 10px;
-  margin: 2px;
-  padding-left: 208px;
-}
-
 /* Lists */
 
 /* stylelint-disable selector-max-type, selector-max-compound-selectors */